AMC / Jeep Pulley Kit, 304, 360 & 401 V-Belt AMC Jeep Pulley Kit, V-belt Made in the USA from 6061-T6 Billet Aluminum Designed specifically for 1972+ American Motors Engines Crank Pulley - 4 Bolt, 5.4" Diameter and 2.7" Overall Length Water Pump Pulley - 6.2" Diameter and 2.7" Overall Length